SCOTUS ruled. We must go after infringers with the 3 tier system. That would be cat, ford, gm, etc. A final aseembly of a product, must likely using all new parts. Secondly we would go after chip markers. qualcomm, etc. Thirdly go after arm or now softbank. Now the question. After patent expiring.  is it possible to notify softbank or qualcomm, that you intend to bring an ingrigement lawsuit for violations up to expirations?  my point. We are probably not using recycled parts or involving the end consumer.